I wrote this as awemawson was posting his reply.
"Greg, I don't know for sure but always assumed the business end of those concrete vibrators employed an
eccentric (off balance) weight spinning at whatever was optimum speed."
I used a pneumatic vibrator for a recent job. I applied it to the forms and then along the surface to get it to settle.
I used a little too much colourant but I'm hoping it'll fade.
"Greg, I don't know for sure but always assumed the business end of those concrete vibrators employed an
eccentric (off balance) weight spinning at whatever was optimum speed."
I used a pneumatic vibrator for a recent job. I applied it to the forms and then along the surface to get it to settle.
I used a little too much colourant but I'm hoping it'll fade.
Busy Bee 12-36 lathe, Busy Bee Mill drill, Busy Bee 4x6 bandsaw, Homemade 9x17 bandsaw, Ad infinitum.